Island



Fay. 1.

In van Zar.

UNITED STATES PATENT OFFIOE.

J. P. MANTON ANI) H. A. BILLINGS, OF PROVIDENCE, RHODE ISLAND.

HANGING RUDDERS.

Specification of Letters Patent No. 27,139, dated February 14, 1860.

To all whom it may concern.'

Be it known that we, J. P. MAN'roN and H. A. BILLINGS, both of Providence, in the county of Providence and State of Rhode Island, have invented a new and Improved Mode of Hanging Rudders; and we do hereby declare that the following is a full, clear, and eXact descriptionof the saine, reference being had to the annexed drawings, making a part of this specification, in which- Figure l, is a side sectional view of the stern of a vessel with its rudder hung according to ouil invention. Fig. 2, is a plan or top view of the circular plate through which the rudder head passes, and which is secured to the deck of the vessel. Fig. 3, is an inverted plan of the plate which fits over the stationary plate and is attached to the rudder head.

Similar letters of reference indicate corresponding parts in the several figures.

The object of this invention is to hang the rudder in such a manner that it will work with but little friction and still be properly supported and firmly secured to the vessel.

The invention consists in suspending the rudder by its head substantially as hereinafter described.

To enable those skilled in the art to fully understand and construct our invention we will proceed to describe it. A

A, Fig. l, represents the stern or after part of a vessel bisected longitudinally and vertically.

B, is the rudder the head O, of which passes up through the vessel and through the center of a circular plate D, which is permanently secured to the deck a, of the vessel. The plate D, has an annular flanch b, at its center which {ianch is let into the deck. To the rudder head C, a circular plate E, is attached by one or more bolts c. This plate E, is provided at its center with an annular lanch or thimble d, which ts within the flanch I), of the plate D, and is allowed to turn freely therein. The edge of the plate E, also has a iianch or lip c, at its edge which tits down over the edge of the plate D, as shown clearly in Fig. 1. In the upper surface of the stationary plate D, an annular co-centric groove f, is made as shown plainly in Fig. 3, and the under surface of the plate E, has a similar groove g, which when the plate E, is over D, coincides with the groove f, as shown in Fig. l. In the grooves f, g, balls or spheres z., are placed and which in consequence of being interposed between the two plates D, E, support the rudder. The lower end of the rudder, at a point in line with its head C, is

provided with a pintle G, which is stepped in a plate H, attached to the back end of the keel of the vessel, as shown clearly in Fig. 1.

From the above description it will be seen that the rudder' B, is suspended by its head C, and on the balls 71,. The thimble d, serves as a guide to steady the head and the pintle G, is subjected only to a holding strain. The anch or lip e, prevents the ingress of dust between the plates D, E,- By this arrangement the rudder is irmly retained in proper posit-ion and allowed to operate with but little friction.

What we claim as our invention and desire to secure by Letters Patent, is-

'Ihe combination with the rudder head C, and hull A, of the plates D, E, when the latter are flanged as shown to prevent surging and provided with grooves f, g, with friction balls k, interposed as and for the purposes herein set forth and described.

J. P. MANTON. H. A. BILLINGS.

W'itnesses:

FRANK S. MANToN, B. D. THAYER. 

